Groundwater in Chautauqua County contains radon, iron, chloride, and lead. Several of these contaminants exceed EPA health standards and warrant your attention.
These contaminants come from the local rock and human activities. Radon seeps naturally from the bedrock into groundwater. Iron dissolves from minerals in the rock layers beneath the county. Chloride enters wells from road salt applied to local roads during winter. Lead can enter water where pipes or fixtures corrode, especially in older homes.
Groundwater in this county is moderately hard, driven mainly by iron and calcium dissolved from the rock. The fractured non-carbonate rock here naturally releases these minerals into water as it moves through cracks and spaces. Most wells in the county show these moderately hard characteristics with elevated iron.
Chautauqua County wells show four contaminants that exceed EPA health standards. Lead damages children's developing brains and kidneys even at low levels. Radon is a radioactive gas that increases lung cancer risk when breathed in over time. Chloride at high levels can harm people with heart or kidney problems. Iron itself does not pose direct health risks but indicates the water chemistry that allows these other contaminants to dissolve into your well.
Wells in this county tend toward moderate hardness, which means you may see some crusty buildup on faucets and inside pipes over time. Iron causes orange-brown staining on sinks, toilets, and laundry. The moderately hard water can also shorten the lifespan of water heaters and dishwashers. Some people notice a metallic or earthy taste, though these are quality-of-life issues rather than health concerns.
We recommend getting your well tested with a comprehensive metals and minerals panel, since multiple health standards are exceeded in county wells. Your well may have much higher or lower levels than what is common here--testing is the only way to know what is actually in your water. A comprehensive panel typically costs between $200 and $400 and will tell you exactly what needs treatment. Water softeners, radon mitigation systems, and specialized filters can address these problems once you know your specific situation.
Not sure if your well is affected? Get certified results in 5–7 days.
Test Your Well Water with Tap Score →| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Radon | 33 | 39% | Moderate | High ⓘ | |
| Iron | 107 | 33% | High | High | |
| Manganese | 51 | 29% | Moderate | High | |
| Sulfate | 78 | 6% | Moderate | Moderate | |
| Chloride | 154 | 5% | High |
Moderate
Elevated concentration, not % above limit
|
|
| Arsenic | 40 | 2% | Moderate | Low | |
| Fluoride | 63 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 19 | 0% | Moderate | Safe | |
| Lead | 40 | 0% | Moderate | Low | |
| Nitrate | 63 | 0% | Moderate | Low | |
| Nitrite | 36 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 19 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 19 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 19 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 19 | 0% | Moderate | Safe | |
| Uranium | 27 | 0% | Moderate | Low | |
| pH | 99 | — | Moderate | Low | |
| PFBS ⓘ municipal | 19 | — | Moderate | Safe | |
| Hardness | 78 | — | Moderate | Low | |
| Fecal Coliform | 13* | 0% | Low | Low | |
| E. coli | 13* | 0% | Low | Low | |
| Total Coliform | 13* | 0% | Low | Low | |
| Sodium | 75 | — | Moderate | Low |
MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.
Data shows potential risk — a certified test confirms whether your water is affected.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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